cmd := []string{goTool, "build", t.goGcflags()}
		cmd = append(cmd, flags...)
		cmd = append(cmd, "-o", "a.exe", long)
		_, err := runcmd(cmd...)
		return err

	case "builddir", "buildrundir":
		// Build an executable from all the .go and .s files in a subdirectory.
		// Run it and verify its output in the buildrundir case.
		longdir := filepath.Join(t.gorootTestDir, t.goDirName())
		files, err := os.ReadDir(longdir)
		if err != nil {

		goHostArch = goEnv("GOHOSTARCH")
		os.Setenv("TESTGO_GOHOSTARCH", goHostArch)

		cgoEnabled = goEnv("CGO_ENABLED")

		// Duplicate the test executable into the path at testGo, for $PATH.
		// If the OS supports symlinks, use them instead of copying bytes.
		testExe, err := os.Executable()
		if err != nil {
			log.Fatal(err)
		}
		if err := os.Symlink(testExe, testGo); err != nil {
			// Otherwise, copy the bytes.

		if ctxt.IsMIPS() {
			shstrtabAddstring(elfRelType + ".MIPS.abiflags")
			shstrtabAddstring(elfRelType + ".gnu.attributes")
		}

		// add a .note.GNU-stack section to mark the stack as non-executable
		shstrtabAddstring(".note.GNU-stack")

		if ctxt.IsShared() {
			shstrtabAddstring(".note.go.abihash")
			shstrtabAddstring(".note.go.pkg-list")
			shstrtabAddstring(".note.go.deps")
		}
	}

	} else {
		flag &= ^O_NONBLOCK
	}
	_, err = fcntl(fd, F_SETFL, flag)
	return err
}

// Exec calls execve(2), which replaces the calling executable in the process
// tree. argv0 should be the full path to an executable ("/bin/ls") and the
// executable name should also be the first argument in argv (["ls", "-l"]).
// envv are the environment variables that should be passed to the new
// process (["USER=go", "PWD=/tmp"]).

See link:{groovyDslPath}/org.gradle.api.tasks.testing.Test.html[Test] for details on all the available configuration options.

--
The test process can exit unexpectedly if configured incorrectly. For instance, if the Java executable does not exist or an invalid JVM argument is provided, the test process will fail to start. Similarly, if a test makes programmatic changes to the test process, this can also cause unexpected failures.

			// relocation would provide.
			switch ldr.SymName(s) {
			case ".dynsym", ".rela", ".rela.plt", ".got.plt", ".dynamic":
				return false
			}
		} else {
			// Either internally linking a static executable,
			// in which case we can resolve these relocations
			// statically in the 'reloc' phase, or externally
			// linking, in which case the relocation will be
			// prepared in the 'reloc' phase and passed to the

func (l *Loader) SetAttrOnList(i Sym, v bool) {
	if v {
		l.attrOnList.Set(i)
	} else {
		l.attrOnList.Unset(i)
	}
}

// AttrLocal returns true for symbols that are only visible within the
// module (executable or shared library) being linked. This attribute
// is applied to thunks and certain other linker-generated symbols.
func (l *Loader) AttrLocal(i Sym) bool {
	return l.attrLocal.Has(i)
}

----

[[sec:install_executable]]
== Installing executables

When you are building a standalone executable, you may want to install this file on your system, so it ends up in your path.

=== Using the `Copy` task

You can use a `Copy` task to install the executable into shared directories like `/usr/local/bin`.
The installation directory probably contains many other executables, some of which may even be unreadable by Gradle.

	a := b.LinkAction(work.ModeBuild, work.ModeBuild, pmain)
	a.Target = testDir + testBinary + cfg.ExeSuffix
	if cfg.Goos == "windows" {
		// There are many reserved words on Windows that,
		// if used in the name of an executable, cause Windows
		// to try to ask for extra permissions.
		// The word list includes setup, install, update, and patch,
		// but it does not appear to be defined anywhere.
		// We have run into this trying to run the

				"application/x-dvi",
				"application/x-elc",
				"application/x-elf",
				"message/x-emlx",
				"application/x-killustrator",
				"application/x-object",
				"application/x-executable",
				"application/x-sharedlib",
				"application/x-coredump",
				"application/x-dosexec",
				"application/x-emf",
				"application/x-filemaker",
				"application/x-font-bdf",
				"application/x-font-dos",